216825797 has 8 divisors (see below), whose sum is σ = 219711744. Its totient is φ = 213946528.

The previous prime is 216825787. The next prime is 216825821. The reversal of 216825797 is 797528612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 216825797 - 2⁶ = 216825733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216825757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118028 + ... + 119850.

It is an arithmetic number, because the mean of its divisors is an integer number (27463968).

Almost surely, 2^216825797 is an apocalyptic number.

It is an amenable number.

216825797 is a deficient number, since it is larger than the sum of its proper divisors (2885947).

216825797 is a wasteful number, since it uses less digits than its factorization.

216825797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3339.

The product of its digits is 423360, while the sum is 47.

The square root of 216825797 is about 14725.0058404063. The cubic root of 216825797 is about 600.7636544925.

The spelling of 216825797 in words is "two hundred sixteen million, eight hundred twenty-five thousand, seven hundred ninety-seven".